overflow
UK[ˌəʊvəˈfləʊ]US[ˌoʊvərˈfloʊ]
v
To flow over the brim or edge of a container.
v
To be filled beyond capacity so that contents spill out.
n
An instance of overflowing; an excess amount that cannot be accommodated.
Morpheme Breakdown
over
flow
over
above, beyond
flow
to move as a liquid
Etymology
The word 'overflow' is a transparent compound from Old English, formed by combining the prefix 'over-' and the verb 'flow'. Its construction follows a straightforward Germanic pattern where 'over-' intensifies or directs the action of the root verb, here indicating movement 'over' a boundary. The literal sense of "flowing over the brim" has been in continuous use since Old English. Over time, this concrete meaning naturally extended into metaphorical and abstract domains, such as describing emotional excess or data exceeding a buffer's capacity, maintaining the core logic of exceeding a limit.
Analysis
Structure: over (above, beyond) + flow (to move as a liquid)
- over: From Old English ofer, meaning "above, beyond, across." It is a preposition/adverb of position and degree, of Proto-Germanic origin.
- flow: From Old English flōwan, meaning "to stream, pour forth." It is a verb, of Proto-Germanic origin, related to the concept of moving fluid.
Examples
The river is expected to overflow its banks after the heavy rains.
Her heart overflowed with gratitude when she saw the community's support.
The error was caused by a buffer overflow in the software.